STORM-1315 Ability to do simple math in numeric edit fields

1 files changed, 83 insertions, 0 deletions

diff --git a/indra/llmath/llcalc.h b/indra/llmath/llcalc.h
new file mode 100644
index 0000000000..23c83f623e
--- /dev/null
+++ b/indra/llmath/llcalc.h
@@ -0,0 +1,83 @@
+/*
+ *  LLCalc.h
+ *  SecondLife
+ *
+ *  Created by Aimee Walton on 28/09/2008.
+ *  Copyright 2008 Aimee Walton.
+ *
+ */
+
+#ifndef LL_CALC_H
+#define LL_CALC_H
+
+#include <map>
+#include <string>
+
+class LLCalc
+{
+public:
+	LLCalc();
+	~LLCalc();
+
+	// Variable name constants
+	static const char* X_POS;
+	static const char* Y_POS;
+	static const char* Z_POS;
+	static const char* X_SCALE;
+	static const char* Y_SCALE;
+	static const char* Z_SCALE;
+	static const char* X_ROT;
+	static const char* Y_ROT;
+	static const char* Z_ROT;
+	static const char* HOLLOW;
+	static const char* CUT_BEGIN;
+	static const char* CUT_END;
+	static const char* PATH_BEGIN;
+	static const char* PATH_END;
+	static const char* TWIST_BEGIN;
+	static const char* TWIST_END;
+	static const char* X_SHEAR;
+	static const char* Y_SHEAR;
+	static const char* X_TAPER;
+	static const char* Y_TAPER;
+	static const char* RADIUS_OFFSET;
+	static const char* REVOLUTIONS;
+	static const char* SKEW;
+	static const char* X_HOLE;
+	static const char* Y_HOLE;
+	static const char* TEX_U_SCALE;
+	static const char* TEX_V_SCALE;
+	static const char* TEX_U_OFFSET;
+	static const char* TEX_V_OFFSET;
+	static const char* TEX_ROTATION;
+	static const char* TEX_TRANSPARENCY;
+	static const char* TEX_GLOW;
+
+	void	setVar(const std::string& name, const F32& value);
+	void	clearVar(const std::string& name);
+	void	clearAllVariables();
+//	void	updateVariables(LLSD& vars);
+
+	bool	evalString(const std::string& expression, F32& result);
+	std::string::size_type	getLastErrorPos()	{ return mLastErrorPos; }
+	
+	static LLCalc* getInstance();
+	static void cleanUp();
+
+	typedef	std::map<std::string, F32> calc_map_t;
+	
+private:
+	std::string::size_type	mLastErrorPos;
+	
+	calc_map_t*	mConstants;
+	calc_map_t*	mVariables;
+	
+	// *TODO: Add support for storing user defined variables, and stored functions.
+	//	Will need UI work, and a means to save them between sessions.
+//	calc_map_t* mUserVariables;
+	
+	// "There shall be only one"
+	static LLCalc*	sInstance;
+};
+
+#endif // LL_CALC_H